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J Dent Res 52(1): 13-18, 1973
© 1973 International and American Associations for Dental Research
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Microstructural Differences in Silver-Tin Dental Amalgams Prepared from Chip and Spherical Alloy Particles

HARSONO WIRJOSUMARTO 1 and RICHARD S. MATEER 1

1 College of Engineering, University of Kentucky, Lexington, Kentucky 40506, USA

X-ray diffraction data support the stoichiometric requirement of the silver-tin amalgamation reaction that "unreacted ggr" diminish with increasing mercury. But particles corresponding to the original shape are visible in commercial spherical alloy amalgams. This is a "ghost" microstructure that results from internal amalgamation along dendrite branches of particles that have not been homogenized.

Submitted on September 16, 1971






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